Mason Hawkins - Longleaf Partners 13F Activity & Position Changes (Q3 2025)

As of Sep 30, 2025, the Longleaf Partners portfolio activity showed several notable changes in holdings, according to the latest SEC 13F filing reported on Nov 14, 2025. The activity included new positions, additions to existing holdings, reductions, and complete exits, providing a clear view of how the portfolio evolved during the quarter.

During Q3 2025, the filing reported:

New Buys - Avantor, Inc., Rayonier Inc. REIT, Constellation Brands, Inc.

Increases - Albertsons Companies, Inc., ACM Research, Inc., Alexander's, Inc., CNX Resources Corporation, Enovis Corporation, and 7 more

Reductions - Bio-Rad Laboratories, Inc., CNH Industrial, Walt Disney Company (The), Fortune Brands Innovations, Inc, FedEx Corporation, and 16 more

Complete Exits - ANGI, HF Sinclair Corporation, Oscar Health, Inc., Park Hotels & Resorts Inc., Millicom, and 1 more

These updates highlight how the portfolio adjusted across different sectors and market conditions, offering insights into allocation shifts and investment trends.

Date	Symbol	Name	Type	Change Qty	% Change	Value	Remaining
Q3 2025	00183L201 ANGI	ANGI	Sell - Position Exit	-2,067,648	-100.0%	$0.00	-
Q3 2025	ACI Albertsons Companies, Inc.	Albertsons Companies, Inc.	Buy	+1,481,692	+42.8%	$86.57M	4,943,869
Q3 2025	ACMR ACM Research, Inc.	ACM Research, Inc.	Buy	+299,943	+25.3%	$58.13M	1,485,687
Q3 2025	ALX Alexander's, Inc.	Alexander's, Inc.	Buy	+59,209	+93.2%	$28.77M	122,712
Q3 2025	AVTR Avantor, Inc.	Avantor, Inc.	Buy - Position Entry	+5,149,420	-	$64.26M	5,149,420
Q3 2025	BIO Bio-Rad Laboratories, Inc.	Bio-Rad Laboratories, Inc.	Sell	-78,031	-24.7%	$66.52M	237,254
Q3 2025	CNH CNH Industrial	CNH Industrial	Sell	-44,439	-1.2%	$40.33M	3,716,808
Q3 2025	CNX CNX Resources Corporation	CNX Resources Corporation	Buy	+289,873	+6.5%	$152.65M	4,752,629
Q3 2025	DINO HF Sinclair Corporation	HF Sinclair Corporation	Sell - Position Exit	-1,751,822	-100.0%	$0.00	-
Q3 2025	DIS Walt Disney Company (The)	Walt Disney Company (The)	Sell	-4,470	-1.5%	$32.73M	285,860
Q3 2025	ENOV Enovis Corporation	Enovis Corporation	Buy	+17,878	+48.9%	$1.65M	54,461
Q3 2025	FBIN Fortune Brands Innovations, Inc	Fortune Brands Innovations, Inc	Sell	-15,713	-1.5%	$54.22M	1,015,602
Q3 2025	FDX FedEx Corporation	FedEx Corporation	Sell	-5,156	-1.4%	$88.28M	374,380
Q3 2025	FIS Fidelity National Information S	Fidelity National Information S	Sell	-323,148	-34.0%	$41.29M	626,109
Q3 2025	G27907107 Dole	Dole	Sell	-515,436	-21.0%	$25.99M	1,933,708
Q3 2025	G9618E107 White Mountains	White Mountains	Buy	+10,558	+50.1%	$52.91M	31,652
Q3 2025	GHC Graham Holdings Company	Graham Holdings Company	Sell	-7,542	-17.6%	$41.63M	35,357
Q3 2025	H Hyatt Hotels Corporation	Hyatt Hotels Corporation	Sell	-296,984	-96.9%	$1.35M	9,508
Q3 2025	HDB HDFC Bank Limited	HDFC Bank Limited	Buy	+10,780	+27.6%	$1.70M	49,874
Q3 2025	HTHT H World Group Limited	H World Group Limited	Sell	-19,894	-2.2%	$34.29M	876,862
Q3 2025	IAC IAC Inc.	IAC Inc.	Sell	-163,469	-5.6%	$94.29M	2,767,511
Q3 2025	KHC The Kraft Heinz Company	The Kraft Heinz Company	Sell	-36,887	-1.0%	$94.72M	3,637,374
Q3 2025	KSPI Joint Stock Company Kaspi.kz -	Joint Stock Company Kaspi.kz -	Sell	-10,362	-5.5%	$14.58M	178,444
Q3 2025	LYV Live Nation Entertainment, Inc.	Live Nation Entertainment, Inc.	Sell	-3,706	-26.3%	$1.70M	10,380
Q3 2025	MAT Mattel, Inc.	Mattel, Inc.	Buy	+941,031	+13.0%	$137.35M	8,161,296
Q3 2025	MGM MGM Resorts International	MGM Resorts International	Sell	-27,102	-1.5%	$60.59M	1,748,002
Q3 2025	MLCO Melco Resorts & Entertainment L	Melco Resorts & Entertainment L	Sell	-4,386,852	-68.6%	$18.44M	2,010,419
Q3 2025	OMI Owens & Minor, Inc.	Owens & Minor, Inc.	Buy	+98,260	+78.4%	$1.07M	223,660
Q3 2025	OSCR Oscar Health, Inc.	Oscar Health, Inc.	Sell - Position Exit	-881,857	-100.0%	$0.00	-
Q3 2025	PCH PotlatchDeltic Corporation - Co	PotlatchDeltic Corporation - Co	Buy	+1,175,507	+122.9%	$86.87M	2,131,754

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